C++ fold println

println1.cpp

#include <iostream>


template <const char sep = ' ', typename ... Args>
void print(Args ... args) {
    ((std::cout << args << sep), ...);
}

template <const char sep = ' ', typename ... Args>
void println(Args ... args) {
    print<sep>(args...);
    std::cout << std::endl;
}


int main()
{
    println<'_'>(1, 2, 3, 4, 5);
    println();
    println("abc", "cde", 2, 3, 1, 5);
}